Security Updates for Microsoft Excel Products (December 2020)

high Nessus Plugin ID 143564

Synopsis

The Microsoft Excel Products are affected by multiple vulnerabilities.

Description

The Microsoft Excel Products are missing security updates.
It is, therefore, affected by multiple vulnerabilities:

- A remote code execution vulnerability. An attacker can exploit this to bypass authentication and execute unauthorized arbitrary commands. (CVE-2020-17123, CVE-2020-17125, CVE-2020-17127, CVE-2020-17128, CVE-2020-17129)

- An information disclosure vulnerability. An attacker can exploit this to disclose potentially sensitive information. (CVE-2020-17126)

- A security feature bypass vulnerability exists. An attacker can exploit this and bypass the security feature and perform unauthorized actions compromising the integrity of the system/application.
(CVE-2020-17130)

Solution

Microsoft has released the following security updates to address this issue:
-KB4493148
-KB4486754
-KB4493139

For Office 365, Office 2016 C2R, or Office 2019, ensure automatic updates are enabled or open any office app and manually perform an update.

See Also

http://www.nessus.org/u?68d763c5

http://www.nessus.org/u?64d44384

http://www.nessus.org/u?7ded81b7

Plugin Details

Severity: High

ID: 143564

File Name: smb_nt_ms20_dec_excel.nasl

Version: 1.10

Type: local

Agent: windows

Published: 12/8/2020

Updated: 2/6/2024

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 6.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2020-17129

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:microsoft:excel

Required KB Items: SMB/MS_Bulletin_Checks/Possible

Exploit Ease: No known exploits are available

Patch Publication Date: 12/8/2020

Vulnerability Publication Date: 12/8/2020

Reference Information

CVE: CVE-2020-17123, CVE-2020-17125, CVE-2020-17126, CVE-2020-17127, CVE-2020-17128, CVE-2020-17129, CVE-2020-17130

IAVA: 2020-A-0556-S, 2021-A-0017-S

MSFT: MS20-4486754, MS20-4493139, MS20-4493148

MSKB: 4486754, 4493139, 4493148